75
0473
90001
Rev
07.26.13
Quality Assurance Procedures
QA Test Procedures:
The QA test procedures are designed to check for Image Quality, Accuracy of Distance
Measurements, and Consistency. These tests can be performed by a PedCAT owner/operator,
or any service technician or radiation physicists. It is recommended that this QA test procedure
be performed annually or if there are any indications of image quality or accuracy issues.
The QA tests will be performed by scanning specified QA phantoms provided by CurveBeam.
These include a QA Line Pair/Chamber Phantom and a Water Phantom. Image Data will be
captured and assessed for acceptable values
.
For Assessments to be completed in CubeVue
software, please refer to Post Processing of Data in Chapter 6 of this manual.
Image Quality (QA Phantom):
The items assessed for Image Quality will be:
High Contrast Spatial Resolution measured via line pairs.
Hounsfield Units (HU) accuracy of 4 Density chambers (Teflon, Acrylic, LDPE, Air)
1. Place the QA Phantom on the devices patient platform using the circular positioning
guides to center it on the platform.
Illustration
of
QA
Phantom
Line
Pairs
LDPE
Teflon
Acrylic
Air
Line
Pairs
LDPE
Teflon
Acrylic
Air
Summary of Contents for pedCAT
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